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1815 Pinglu Earthquake
Western Henan and southern Shanxi in northern China were struck by an earthquake of estimated magnitude 6.8 on 23 October 1815. The epicentre was in Pinglu County in southernmost Shanxi, which was the worse affected area. It had a maximum felt intensity of IX (''violent'') on the Modified Mercalli scale. It caused the collapse of many houses and cave dwellings and led to the deaths of at least 13,000 people. Tectonic setting Shanxi and nearby provinces lie across the Shanxi Rift System, an active intraplate zone of rifting. The rift system forms the southern and eastern borders of the Ordos Block. This zone of extensional tectonics is a reaction to the ongoing collision of the Indian Plate with the Eurasian Plate. This has caused rotation of the Ordos and North China blocks leading to extensional displacement between them. At its southwestern end in Shaanxi the rift system has a west–east trend, before turning to a SSW–NNE trend through most of Shanxi. The individual rift ba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Normal Fault
In geology, a fault is a planar fracture or discontinuity in a volume of rock across which there has been significant displacement as a result of rock-mass movements. Large faults within Earth's crust result from the action of plate tectonic forces, with the largest forming the boundaries between the plates, such as the megathrust faults of subduction zones or transform faults. Energy release associated with rapid movement on active faults is the cause of most earthquakes. Faults may also displace slowly, by aseismic creep. A ''fault plane'' is the plane that represents the fracture surface of a fault. A ''fault trace'' or ''fault line'' is a place where the fault can be seen or mapped on the surface. A fault trace is also the line commonly plotted on geologic maps to represent a fault. A ''fault zone'' is a cluster of parallel faults. However, the term is also used for the zone of crushed rock along a single fault. Prolonged motion along closely spaced faults can blur the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eurasian Plate
The Eurasian Plate is a tectonic plate that includes most of the continent of Eurasia (a landmass consisting of the traditional continents of Europe and Asia), with the notable exceptions of the Indian subcontinent, the Arabian subcontinent and the area east of the Chersky Range in eastern Siberia. It also includes oceanic crust extending westward to the Mid-Atlantic Ridge and northward to the Gakkel Ridge. The eastern edge is a boundary with the North American Plate to the north and a boundary with the Philippine Sea Plate to the south and possibly with the Okhotsk Plate and the Amurian Plate. The southern edge is a boundary with the African Plate to the west, the Arabian Plate in the middle and the Indo-Australian Plate to the east. The western edge is a divergent boundary with the North American Plate forming the northernmost part of the Mid-Atlantic Ridge, which is straddled by Iceland. All volcanic eruptions in Iceland, such as the 1973 eruption of Eldfell, the 1783 eruptio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1815 Earthquakes
Events January * January 2 – Lord Byron marries Anna Isabella Milbanke in Seaham, county of Durham, England. * January 3 – Austria, Britain, and Bourbon-restored France form a secret defensive alliance treaty against Prussia and Russia. * January 8 – Battle of New Orleans: American forces led by Andrew Jackson defeat British forces led by Sir Edward Pakenham. American forces suffer around 60 casualties and the British lose about 2,000 (the battle lasts for about 30 minutes). * January 13 – War of 1812: British troops capture Fort Peter in St. Marys, Georgia, the only battle of the war to take place in the state. * January 15 – War of 1812: Capture of USS ''President'' – American frigate , commanded by Commodore Stephen Decatur, is captured by a squadron of four British frigates. February * February – The Hartford Convention arrives in Washington, D.C. * February 3 – The first commercial cheese factory is founded in Switz ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
